Ratchet-wrench.



n. o. mwsou. v ILTOIIT WIEIUI. LPPIIUIOI ILID JULY ,100..

hmm ou: 11.1910.

Minton H. lawson ATTORNEY :maar o. Lawson, or xeoaaooa, rana.

' amener-warnen.

Speetleattea of Lettera latent.

l Paieneeaoee. l11, 191e.

application niet my is. im. anni lo. 101.001.

To all who-ni may concern.' l

i `lle lt known that l', llenar O. Lawsoiua i l eitizen of the'Uuitedfstatefuresiding at Mc- "he reiidilv operated iii inaccessible places,

accompanyingdrawing, whereinz" v of the wrench. Fig. 2 is a top view thereof,

iikelv to vtiet out of working order.

Gregor. iii the eoiiiity 'of McLennan and i Stute of Texas, .have invented Acertain new i nud useful luiproveinenta in Ratcheti Wrenches, ot' whieli the following is a apeci- .l i'it'ati'on.

y invention relates to iiew'and uisefiil `iniproveuientii in rntehetivrenches. and hasv for its ohject to provide n wrench that-,may

where -it is imposriihle to remove the wrench from the iuit to secure a new grip thereon.

' Another ohjrei of' my 'invention in to' rovide u device ofthe elieriwter described hat will he strong, durahle, simple and edlcient und eoinpiiratively easy to produce, and also one in which the various partil will not be v ith these and'Y various other objects in vieu', niy invention has relation-to certainv novel feiitui'es of' construction and operation, nu example of which is deueriluidv in the following speciticntiou und illustrated in the Figure 1 ,is u longitudinal side elevation with the handle portion broken away to ahow the screw driver pocketetl therein. Fig. 3 is a longitudinal sectional view talten through theheiid ofthe wrenchnshowing the operating mechanism thereof, including the piiwls und `the ratchet operated thereby, andtheloeking pine virherehv the reinovab e portion of the ratchet is held in place. Fig. 4 `iii iil eide view'of the riiteliet with its i'e. uiovulile portion omitted. hig. fi is a traneverse'view of the annie. the lower portieri heing iii iiectioii.` Fig.ltl is u side view of one` of the i'einoviiblo guide v plates which Aare adoptedv to attach nt each side of the head oft ie wrench the view being taken from the inside tlierei'if.- Fig. tl is a transverse-,ecctionii'l elevation of the slome.` Figs. 7 undv 8 are side and end views, respectively, of a rectangular block, provided with an undercut tongue adepti-d to alide into a grooveat one aide of the aquiire, central aperture of the ratchet', Figs. 0 and l0 are u` aideand ond view, res actively, of al toothed jaw adapted tobe introduced into the ratchet at one aide of the` square central aperture, aiiui-A liirly to the aforementioned block. Figa. 11 and i2 are side and end views, vely i et'la'rmtiineulnr bloclv having a -aha 1 ot' them' platea uvuttmg aga aperture at one of its axtramitiea,one aida o; -wlij-eh iii eer'riitod, toniiea'talng provided, 'laterally to this block, a( apting it to hain-v `trodiieedfiutothe central aperture of the. e0

riitcliet similari to the block' and jaw descrihml' previous y. Fig. it! is another atto'ehiiient, having a pair of adiuatabla wrench jaws, and a square shank adapted to he introduced transversely into the central Il` aperture of the ratrhet. Figa. 14 and 16 are eiid und side vicwii, reapeetively of the lame. Figs.. i6 and 17 nre aule and end views, le spec-tively. of u square brace, adapted to be introduced into the ventral aperture o'f the 'l0 ruteliet transversely thereof, a'aocket'beng provided at one extremity to receive a bit,/ vnud iiJiandle iit the other. Fig. 16 ia ahorn' in ypartial i-iectioii to make elearita interior const i'ui't'ion. 'IB Referrin` now more particolari to the ili'iiwin` e numeral I ,deiioteltlie shank or han le of theLwreneh, and 2 .a longitudi-l iinl recrea thereinv adapted to receive the screw driver 3. -A eiip upon the extremity eo. of the screw driver projects from the its surfaces coming flushv with. thoae `of th; l

handle l. f A

'lhe sides ofthe handle 1 at the eittremity thereof adjacent to the head of'thatool are le provide-Sl with ahouldera. The narrower pair of these aides are curved alightly out ward from the vshoulders thereupon, and curved platea 5 aie attached tothe curved port ouahv acre 'a tl. the inper extremitieii I9 ders and their ou er extremities being curved in eireular ares. Upon the other two aide! of the forward portion of the ahanlr l, abuttin v u v iiin'iit the iihoiilders thereupon, are at- De. tue i'ei the two quitte plates 7 by 'moana of the arreivs 8. i evliiidrical reeeee iii thua formed in the head of the tool by the two sete of platee-5 and 7, and thel ratchet 9 il rotatably mounted within this recelo. ratchet is 'guided in its rotation by the introduction of circular toit' eaV 10 upon its. sides, into the'groovea 10 o vthe 52de platea, and liv the introduction of vllowover. the invention `iiieludea the idea n;

of using'ii solid ratchet with a central aperture, iis uliownin Fig. v2. p

'l'hexoe l`tungsten iiile platea into the 1B loe when the open pnrtion thereof i5 ndjuecnt n maar "I' Utulerem. grens-N it extend centrally intn the parallel tides nt' the central npertnre, these groove-t being adapted to receive tongnei: tr nt current ending shape curled hy the various attne nnent hereinafter tlcsacrihed. t v

A dug I6 is ivoted in the hold pol-.tion of the shank nniiis ncted on by a sprln t?, tending to held it in engagement wit the ratchet wheel. Spring pnwln t8 are attached tothe extremities of the pinten 5, und are also adapted toengnge the teeth .of the Mitchel wheel. The use of these uddnnmnl pawls 18 .-'treng'then.- the device und also fumishes means of rotating the ratchet.

tothe dt itt.

' The lne ing-key It' is mounted in n cyl-indricul reces-sf in thc hemLpm-tien. nl the This key is ndnpted 'to enter nn aperture 20 in the fece ol' the ratchet und is nornmily rcstruined from entering.r thel sanne hy n emled spring ttt. 'lhe omer extremity nt thihey is provided-with n lnternlly extending ni'ni 2. *which nrin is tnlnpred to he tm ned into eithe of two grooves 2i provided for that ptn-puse in the plate .'i. 'l'hc rntehet chmn'e n: provided with locking-pins g pmketed therein, und culed springs Q6 enein-ling tl-e-e pim tend to nornmlly hohl i then in their lwked pmition.

"t um nenn.' that. imatges muy xr.- nnnle in the forni mul prnfmrtiun et' pnrts nndtlt# tttiltut' the leuice herein lleiasriluel. .nmli 'itncsscs:

.jhnwn :is n .preternhie enilmdit'm-n'i nl' my l invention, without. departing frmn the spirit t ne acrilici-ng the mlvanta en thercnl, und l* therefore referee the rignt to make mehehnnges and alterations in said device mi fail-l' comes within its scope.

In n' ratchet wrench the cmnbinntinn with the shank thereof, ot four plates nttached to the shank extremity forming hy then- 'nnetnnnaeircnhn' man, a ratchet runat il" mounted in thc circular recess and having tengne und ve connectien hetwcen its sides an the adjacent plates, said rittchet heing provided with n trnnscerh'c slot extending eentrnlly thereintn, having undercut grooves in its sides, n ratchet segment rovided .vithton ues at each extremity :u apting it to enter t slot f said ratchet.` t9 complete the circle thcrent',

. n ienns for secnrin'ig seid segment in n 'possition such that'. its teeth are flush with the ratchet teeth. spring pawls'm'nred to opposite plntes forming the ratchet inclmnre, nml engaging the rntehet. teeth, a prinf .piemwl'ilng pwnlelly nnnmted in theshttn extremity und engaging the ratchet teeth.,

und n pin slthihly nmuntcd in the shank estrennty. ndnpted tu enter n cavity in the rntehet tace to lock the Sanne against ruttitien. l v

In teitinmny wherenf l hnve signed my ttm subscribing \\'it|\e.-.-'e,-x.v

HARRY t?. lhtvl'b'tiN.

T. S. Sums, al. A. Ful-:nvr: 1 

